Chameleon Framework与Swift 4不兼容问题及修复代码分享

I ran into compatibility issues between the Chameleon Framework and Swift 4 recently. After successfully installing the ChameleonFrame/Swift pod, I was hit with around 30 compilation errors. I fixed each one manually to get the framework up and running smoothly, and below is the corrected ChameleonShorthand.swift file—you can copy this and replace the corresponding file in your project. If you have a more optimal solution, feel free to share it!

import UIKit 

// MARK: - UIColor Methods Shorthand 

/** Creates and returns a complementary flat color object 180 degrees away in the HSB colorspace from the specified color. 
- parameter color: The color whose complementary color is being requested. 
- returns: A flat UIColor object in the HSB colorspace. */ 
public func ComplementaryFlatColorOf(color: UIColor) -> UIColor { 
    return UIColor(complementaryFlatColorOf: color) 
} 

/** Returns a randomly generated flat color object with an alpha value of 1.0 in either a light or dark shade. 
- parameter shade: Specifies whether the randomly generated flat color should be a light or dark shade. 
- returns: A flat UIColor object in the HSB colorspace. */ 
public func RandomFlatColorWithShade(shade: UIShadeStyle) -> UIColor { 
    return UIColor(randomFlatColorOf: shade) 
} 

/** Creates and returns either a black or white color object depending on which contrasts more with a specified color. 
- parameter backgroundColor: The specified color of the contrast color that is being requested. 
- parameter returnFlat: Pass **true** to return flat color objects. 
- returns: A UIColor object in the HSB colorspace. */ 
public func ContrastColorOf(backgroundColor: UIColor, returnFlat: Bool) -> UIColor { 
    return UIColor(contrastingBlackOrWhiteColorOn: backgroundColor, isFlat: returnFlat) 
} 

/** Creates and returns a gradient as a color object with an alpha value of 1.0 
- parameter gradientStyle: Specifies the style and direction of the gradual blend between colors. 
- parameter frame: The frame rectangle, which describes the view’s location and size in its superview’s coordinate system. 
- parameter colors: An array of color objects used to create a gradient. 
- returns: A UIColor object using colorWithPattern. */ 
public func GradientColor(gradientStyle: UIGradientStyle, frame: CGRect, colors: [UIColor]) -> UIColor { 
    return UIColor(gradientStyle: gradientStyle, withFrame: frame, andColors: colors) 
} 

public func HexColor(hexString: String, _ alpha: CGFloat = 1.0) -> UIColor { 
    return UIColor(hexString: hexString, withAlpha: alpha) 
} 

/** Returns the average color generated by averaging the colors of a specified image. 
- parameter image: A specified UIImage. 
- returns: A flat UIColor object in the HSB colorspace. */ 
public func AverageColorFromImage(image: UIImage) -> UIColor { 
    return UIColor(averageColorFrom: image) 
} 

// MARK: - Array Methods Shorthand 
// TODO Array Extension needed ;) 

/** Generates and creates an array of 5 color objects in the HSB colorspace from the specified color. 
- parameter colorSchemeType: The color scheme with which to select colors using a specified color. 
- parameter color: The specified color which the color scheme is built around. 
- parameter isFlatScheme: Pass *true* to return flat color objects. 
- returns: An array of 5 color objects in the HSB colorspace. */ 
public func ColorSchemeOf(colorSchemeType:ColorScheme, color:UIColor, isFlatScheme:Bool) -> [UIColor] { 
    return NSArray(ofColorsWith: colorSchemeType, using: color, withFlatScheme: isFlatScheme) as! [UIColor] 
} 

/** Generates and creates an array of 5 color objects in the HSB colorspace that appear most often in a specified image. 
- parameter image: The specified image which the color scheme is built around. 
- parameter withFlatScheme: Pass **true** to return flat color objects. 
- returns: An array of 5 color objects in the HSB colorspace. */ 
public func ColorsFromImage(image: UIImage, withFlatScheme: Bool) -> [UIColor] { 
    // TODO: Remove forced casting 
    return NSArray(ofColorsFrom: image, withFlatScheme: withFlatScheme) as! [UIColor] 
} 

// MARK: - Special Colors Shorthand 

/** Returns a randomly generated flat color object whose alpha value is 1.0. 
- returns: A flat UIColor object in the HSB colorspace. */ 
public func RandomFlatColor() -> UIColor { 
    return UIColor.randomFlat() 
} 

public func ClearColor() -> UIColor { 
    return UIColor.clear 
} 

// MARK: - Light Shades Shorthand 
public func FlatBlack() -> UIColor { 
    return UIColor.flatBlack() 
} 

public func FlatBlue() -> UIColor { 
    return UIColor.flatBlue() 
} 

public func FlatBrown() -> UIColor { 
    return UIColor.flatBrown() 
} 

public func FlatCoffee() -> UIColor { 
    return UIColor.flatCoffee() 
} 

public func FlatForestGreen() -> UIColor { 
    return UIColor.flatForestGreen() 
} 

public func FlatGray() -> UIColor { 
    return UIColor.flatGray() 
} 

public func FlatGreen() -> UIColor { 
    return UIColor.flatGreen() 
} 

public func FlatLime() -> UIColor { 
    return UIColor.flatLime() 
} 

public func FlatMagenta() -> UIColor { 
    return UIColor.flatMagenta() 
}

Note: The original code snippet had a truncated line for the FlatMagenta() function— I've completed it to ensure the code compiles correctly.

内容的提问来源于stack exchange，提问作者pakpe